Question

Dipole induced dipoloe interactions are present in which of the following pairs :-

• A. $SiF_4$ and $He$ atoms
• B. $H_2O$ and alcohol
• C. $Cl_2$ and $CCl_4$
• D. $HCl$ and $He$ atoms

Answer 1

The Correct Option is D

To solve this question, we need to identify which of the given pairs exhibit dipole-induced dipole interactions. This type of interaction occurs when a polar molecule (permanent dipole) induces a dipole in a nonpolar molecule or atom.

• $SiF_4$ and $He$ atoms: $SiF_4$ is a nonpolar molecule, and $He$ is a noble gas atom with no permanent dipole moment. No dipole-induced dipole interaction can occur here.
• $H_2O$ and alcohol: Both are polar, and interactions are primarily hydrogen bonding rather than dipole-induced dipole interactions.
• $Cl_2$ and $CCl_4$: Both $Cl_2$ and $CCl_4$ are nonpolar, so no significant dipole-induced dipole interactions take place.
• $HCl$ and $He$ atoms: $HCl$ is a polar molecule with a permanent dipole moment, while $He$ is a nonpolar noble gas atom. The polar $HCl$ can induce a dipole in the $He$ atom.

Based on the analysis above, the correct answer is the pair where dipole-induced dipole interactions are present: $HCl$ and $He$ atoms. This is because the polar molecule $HCl$ can induce a dipole in the nonpolar $He$ atom.